Model PCL Channel Single-Ended Isolated Analog Input Card

Transcription

1 Model PCL Channel Single-Ended Isolated Analog Input Card

2 Copyright Notice This documentation and the software included with this product are copyrighted 1994 by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right to make improvements to the products described in this manual at any time without notice. No part of this manual or software may be reproduced, copied, translated or transmitted, in any form or by any means without the prior written permission of Advantech Co., Ltd. Information provided in this manual is intended to be accurate and reliable. However, Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringements of rights of third parties which may result from its use. Acknowledgments PC-LabCard is a trademark of Advantech Co., Ltd. IBM, PC and PC/XT/AT are trademarks of International Business Machines Corporation. MS-DOS, MASM, QuickBASIC, Microsoft C and MS- PASCAL are trademarks of Microsoft Corporation. Intel is a trademark of Intel Corporation. Turbo C and Turbo PASCAL are trademarks of Borland International. MOXA is a trademark of 404 Technologies Inc. Part No , 4th Edition Printed in Taiwan, August, 1994

3 Contents CHAPTE 1 INTODUCTION...1 Features... 2 Specifications... 3 General Specifications... 3 CHAPTE 2 INSTALLATION... 5 Initial Inspection... 6 Switch and Jumper Settings... 7 Connector Pin Assignment... 9 Plugging the PCL-813 into your PC CHAPTE 3 SIGNAL CONNECTION Analog Input Connection CHAPTE 4 EGISTE STUCTUE AND FOMAT I/O Port Address Map A/D Data egisters Gain Control egister Multiplexer Scan egister How to Initiate an A/D Conversion... 19

4 CHAPTE 5 SOFTWAE Introduction Parameter Table Parameter Descriptions Function List Function Description Language Interface BASICA GWBASIC (version 3.20) QuickBASIC 4.0 and Microsoft C Turbo C Borland C Microsoft PASCAL Turbo PASCAL APPENDIX A CALIBATION V Assignments V location A/D Calibration APPENDIX B PCLD-881 INDUSTIAL TEMINATION BOAD Introduction Features Applications Technical Diagrams... 42

5 CHAPTE 1 INTODUCTION Chapter 1 Introduction 1

6 INTODUCTION The PCL Channel Single-Ended Isolated Analog Input Card is an easy to use and cost effective IBM PC/XT/AT compatible dataacquisition card. The specifications and the user-friendly software driver of this card make it a popular solution for a wide range of industrial and laboratory applications. Such applications include: measurement of transducer and sensor data, waveform acquisition and measurement, process monitoring, and vibration and transient analysis. Features 32 Single-ended, isolated analog inputs 12-Bit resolution A/D conversion Programmable analog input ranges: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, 0~10 V, 0~5 V, 0~2.5 V, 0~1.25 V Supports software trigger Versatile language drivers including BASIC, PASCAL, C and C++ 2 PCL-813 User's Manual

7 Specifications Analog Input (A/D Converter) Channels: 32 Single-ended with isolation esolution: 12-bit, successive approximation Input ange: Bipolar: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, software programmable Unipolar: 0 ~ 10 V, 0 ~ 5 V, 0 ~ 2.5 V, 0 ~ 1.25 V, software programmable (Bipolar or Unipolar is selected by JP100) Converter: AD574 or equivalent, with 25 ms conversion time Data transfer rate: 25 Kbps maximum, software control only Isolation voltage: >500 V DC from input to output Accuracy: 0.01% of reading ±1 LSB Nonlinearity: ±1 bit maximum Amplification: x1, x2, x4, x8, software programmable Trigger mode: By software trigger Temp. coefficient: ±25 ppm/ O C Overvoltage: Continuous ±30 V maximum Input impedance: >10 MW General Specifications Power consumption: +5 V: 660 ma, typical +12 V: 140 ma, typical I/O connector: 37-pin D-type connector (analog input port) Operating temp.: 0 to 50 O C (32 to 122 O F) Storage temp.: -20 to 50 O C (-4 to 149 O F) Board dimensions: 99 mm x 219 mm Weight: 210 gm (7.42 oz.) Chapter 1 Introduction 3

8 CHAPTE 2 INSTALLATION Chapter 2 Installation 5

9 INSTALLATION Initial Inspection When you receive your PCL-813 you should find enclosed: One PCL Channel Single-Ended Isolated Analog Input Card User's Manual Utility Diskette, which includes the card's software driver The PCL-813 was carefully inspected both mechanically and electrically before shipment. It should be free of marks and scratches and in perfect electrical order on receipt. When unpacking, check the unit for signs of shipping damage (damaged box, scratches, dents, etc). If there is damage to the unit or it fails to meet specifications, notify our service department or your local sales representative immediately. Also, call the carrier immediately and retain the shipping carton and packing material for the inspection by the carrier. We will make arrangements to repair or replace the unit. emove the PCL-813 card from its protective packaging carefully. Keep the anti-vibration package. Whenever you are not using the board, please store it in the package for protection. Discharge any static electricity by touching the back of the system unit before you handle the board. You should avoid contact with materials that create static electricity such as plastic, vinyl, and styrofoam. The board should be handled only by the edges to avoid static electric discharge which could damage the integrated circuits on the PCL-813. Warning! Discharge your body s static electric charge by touching the back of the grounded chassis of the system unit (metal) before handling the board. You should avoid contact with materials that hold a static charge such as plastic, vinyl and styrofoam. Handle the board only by its edges to avoid static damage to its integrated circuits. Avoid touching the exposed circuit connectors. 6 PCL-813 User's Manual

10 Switch and Jumper Settings The PCL-813 has been designed with ease-of-use in mind. On-board the card you will notice that there is only one DIP switch (SW1). This switch is used to set the PCL-813 s base address. Unipolar or Bipolar mode inputs is selected by jumper JP100. The following section goes into this in more detail. I/O Address Selection Most peripheral devices and interface cards are controlled by your PC s I/O ports. These devices and cards should be placed in an appropriate I/O space so that there will be no conflicts between them and the PCL-813. Keep in mind that the PCL-813 uses 16 consecutive address locations in your PC s I/O space. The following table provides an I/O port address map for your reference. This will assist in locating appropriate addresses for your other peripheral devices and interface cards. I/O port base addresses are selected from the 6-position DIP switch SW1 on-board the PCL-813. The valid addresses are 000 to 3F0 (hexadecimal). The factory default base address setting is 220. From time to time, you may find that you will have to use some of these spaces for other devices. If this is the case, then you can change the address according to the information given in the following table. Chapter 2 Installation 7

11 CAD I/O Address (SW1) I/O ADDESS ANGE SWITCH POSITION (HEXADECIMAL) A9 A8 A7 A6 A5 A l l l l l l F l l l l l F l l l l l * F l l l l F l l l l F l l l l F0-3FF = Off l = On * = Factory default setting NOTE: A4 through A9 corresponds to your PC s address lines Input ange Selection If your application always uses Unipolar input types, you should switch the JP100 to the U location, so the PCL-813 may accept to 0~10V, 0~5V, 0~2.5V and 0~1.25V Unipolar analog inputs. 8 PCL-813 User's Manual

12 Connector Pin Assignment The PCL-813 is equipped with one 37-pin D-type connector located on the card s mounting bracket. An illustration of this connector is given below: AI 0 AI 2 AI 4 AI 6 AI 8 AI 10 AI 12 AI 14 AI 16 AI 18 AI 20 AI 22 AI 24 AI 26 AI 28 AI AI 1 AI 3 AI 5 AI 7 AI 9 AI 11 AI 13 AI 15 AI 17 AI 19 AI 21 AI 23 AI 25 AI 27 AI 29 AI 31 Key: AI = Analog input = Analog ground Chapter 2 Installation 9

13 Plugging the PCL-813 into your PC Warning! Turn off your PC s power supply whenever you install or remove the PCL-813 or its cables. Static electricity can easily damage computer equipment. Ground yourself by touching the chassis of the computer (metal) before you touch any boards. See the static warning on page 6. Before you plug the PCL-813 into your PC, make sure that the computer s power is turned off, and that all power cords and all peripheral devices have been disconnected from the system. Use the following procedure as a guideline for plugging the PCL-813 into your PC. 1. emove the cover from the PC s chassis, and locate a vacant expansion slot on the passive backplane or motherboard for installing the PCL Take the card and insert it into the expansion slot, pressing it firmly into place. Use the card s mounting bracket as a guide between the chassis rear panel and backplane or motherboard. 3. Once you have inserted the card firmly into the slot, secure it to the chassis by fastening its mounting bracket with a screw. 4. Attach the appropriate cable to connector CN1. 5. eplace the chassis cover, and reconnect all power cords and peripheral cables. Installation of the PCL-813 is now complete. 10 PCL-813 User's Manual

14 3 Signal Connection CHAPTE Chapter 3 Signal Connection 11

15 SIGNAL CONNECTION Since most data acquisition applications involve voltage measurement, it is important to make the correct signal connections in order to avoid any damage to your system, and to ensure accurate measurements. This chapter provides some helpful information about making the proper signal connections for your application. Analog Input Connection As you already know, the PCL-813 supports 32 single-ended isolated analog inputs. A single-ended analog input connection uses only one signal wire connected to an analog input terminal, which is referenced to a common ground. For example, in order to measure the voltage of a battery, simply connect its negative side to the PCL-813 s ground (any one of the pins on connector CN1), and its positive side to one of the card s analog input channels. NOTE: The PCL-813 does not support differential signal source inputs. The following diagram illustrates a single-ended, common ground, analog input connection: + Vs To A/D CHIP Single-Ended Analog Input Connection 12 PCL-813 User's Manual

16 CHAPTE 4 egister Structure And Format Chapter 4 egister Structure And Format 13

17 EGISTE STUCTUE AND FOMAT This chapter has been written for those who wish to write their own software driver instead of using that of the PCL-813. The PCL-813 requires 16 consecutive addresses in I/O space. The most important issue in programming the PCL-813 is understanding the meaning of the 16 registers addressable from the selected I/O port base address. Here, you will find detailed information about the PCL-813 s register formats and control procedures. I/O Port Address Map The following table shows you which base I/O addresses are used by the PCL-813. efer to this map from time to time in order to become familiar with each of the card s register formats and their purpose. Sixteen consecutive registers corresponding to their I/O addresses are used to control the PCL-813 s various functions. The following table has been provided in this chapter as a preface which outlines these addresses, relative to their location and control (read or write) assignments. 14 PCL-813 User's Manual

18 I/O Port Address Map LOCATION EAD WITE BASE+0 N/U N/U BASE+1 N/U N/U BASE+2 N/U N/U BASE+3 N/U N/U BASE+4 A/D low byte N/U BASE+5 A/D high byte N/U BASE+6 N/U N/U BASE+7 N/U N/U BASE+8 N/U N/U BASE+9 N/U Gain control BASE+10 N/U Multiplexer scan control BASE+11 N/U N/U BASE+12 N/U Software A/D trigger BASE+13 N/U N/U BASE+14 N/U N/U BASE+15 N/U N/U NOTE: N/U = Not used The sections that follow provide further information about each register s data format according to its specific operation. Chapter 4 egister Structure And Format 15

19 A/D Data egisters The PCL-813 uses the data registers located at I/O ports BASE+4 and BASE+5 to store the converted A/D data. The low byte data is stored at BASE+4, and the high byte data is stored at BASE+5. BASE+4 A/D Low Byte Data (ead) D7 D6 D5 D4 D3 D2 D1 D0 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 BASE+5 A/D High Byte Data (ead) D7 D6 D5 D4 D3 D2 D1 D0 X X X DDY AD11 AD10 AD9 AD8 Where: AD0 through AD11: epresent the PCL-813 s A/D data bits. AD0 is the Least Significant Bit (LSB), and AD11 is the Most Significant Bit (MSB). DDY: Data eady Bit. When A/D conversion is in progress, this bit remains as 1. It becomes 0 when the A/D conversion is completed. 16 PCL-813 User's Manual

20 Gain Control egister BASE+9 is used to set the PCL-813 s amplification gain for A/D conversion. The PCL-813 provides four different gains: x1, x2, x4, and x8. The following tables outline BASE+9 s register format and corresponding gain settings: BASE+9 Gain Control egister (Write) D7 D6 D5 D4 D3 D2 D1 D G1 G0 If JP100 is located at B G1 G0 Gain Input ange 0 0 x1 ±5 V 0 1 x2 ±2.5 V 1 0 x4 ±1.25 V 1 1 x8 ±0.625 V If JP100 is locatesd at U G1 G0 Gain Input ange 0 0 x1 0-10V 0 1 x2 0-5V 1 0 x V 1 1 x V Chapter 4 egister Structure And Format 17

21 Multiplexer Scan egister The PCL-813 can multiplex up to 32 channels of analog input. Users have to set this register, located at BASE+10, to select the channel to be measured before performing any A/D conversion. This is done by selecting the channel to be used using a 5-bit register. The register format is as shown below: BASE+10 Multiplexer Scan Control (Write) D7 D6 D5 D4 D3 D2 D1 D C4 C3 C2 C1 C0 In order to facilitate the selection of 32 channels using the 5-bit register, each bit (D0~D4) can be set via the following table. 32 channel selection C4 C3 C2 C1 C0 CH PCL-813 User's Manual

22 How to Initiate an A/D Conversion The PCL-813 A/D conversion is software controlled, and is based upon the polling concept. After the A/D converter has been triggered, the application program checks the Data eady Bit (DDY) of the A/ D status register. If this bit is detected (high), then A/D conversion is in progress. When this bit returns to low, then A/D conversion is completed, and the converted (binary) data may be read by the program. There are two software methods to force the A/D converter to execute a single conversion: by writing a program yourself that writes the instruction directly to the I/O port, or by writing a program which utilizes that provided by the PCL-813 driver. We suggest that you use the latter, the PCL-813 software driver, since: It makes your programming job easier. You will obtain a more readable source code which is easy to debug. It will enhance your program s performance. For those who prefer to use the first method, writing directly to the I/O ports from within their own application, we provide the following step by step procedure: Step 1: Step 2: Step 3: Step 4: Step 5: Set the desired channel by specifying the MUX scan range. Wait at least 5 ms before issuing a new command to the PCL-813. Trigger the A/D conversion by writing any value to BASE+12 of the A/D port, and then wait at least 20ms. Wait until the Data eady Signal (ead the A/D high byte register DDY bit, D4 of BASE+5) has returned to low. Obtain the binary data by reading the A/D registers (BASE+5 and BASE+4). First read the high byte, then the low byte. Convert the binary data to an integer value. efer to the DEMO01.C program for further details. Chapter 4 egister Structure And Format 19

23 CHAPTE 5 Software Chapter 5 Software 21

24 SOFTWAE Introduction This chapter describes the functions supported by the PCL-813 software driver. Programming languages supported by the driver include BASICA, GWBASIC, Quick BASIC 4.0/4.5, Microsoft C, Turbo C, Borland C++, Microsoft PASCAL, and Turbo PASCAL. The driver is a Terminate and Stay esident (TS) program which runs in the background while your application runs in the foreground. You must install the driver before you can use the following functions. Each PC-LabCard has its own driver, loaded by typing the appropriate filename at the DOS prompt. In the case of the PC-LabCard PCL-813, just type PCL-813 at DOS prompt, and press enter to load the program. Parameter Table The software driver simplifies your programming by using a Parameter Table reference algorithm. The tables hold parameters, minimum and maximum values, and other specific information regarding the functions. In contrast, the application program contains tables specifying parameters and modes of operations. All the function calls supported by the drivers need only two arguments: the function number and a memory address pointer which points to a pre-defined Parameter Table. Once the Parameter Table is defined, just assign the desired function number and the Parameter Table s address to the driver. Once this is done, it will pick up the necessary parameters associated with that specific function call, and then automatically execute the function. A Parameter Table s format will be illustrated in detail later in this manual. What you have to know here is that the Parameter Table includes all the parameter settings necessary for all data acquisition function calls supported by the software driver. The following is an example of parameter tables: 22 2 PCL-813 User's Manual

25 Example (C language): extern pcl813(int, unsigned int *); unsigned param[60]; /* Parameter Table */ unsigned buffer[100]; /* A/D data buffer */ main() { unsigned far *ptr; /* buffer pointer */ tr = (unsigned far *) buffer; param[0] = 0; /* card number */ param[1] = 0x220; /* I/O base address */ param[10] = FP_OFF(ptr); /* offset address */ param[11] = FP_SEG(ptr); /* segment address */ param[12] = 0; param[13] = 0; param[14] = 100; /* only one buffer used */ /* number of A/D conversion */ param[15] = 0x0; /* A/D start channel*/ param[16] = 0xA; /* A/D stop channel */ param[17] = 0x0; /* gain code */ pcl813(3,param); pcl813(4,param); pcl813(5,param);.. } /* initialize the PC- LabCard */ /* initialize A/D func tion */ /* A/D conversions, and store*/ /* converted data to buffer */ Chapter 5 Software 23

26 There are two ways to change your program s settings: 1. Modify corresponding parameters directly. If you want to change the A/D start channel number, for example, you do not need to issue any function calls to change this setting, just change the corresponding parameter in your Parameter Table. Example (C language): extern pcl813(int, unsigned int *); unsigned int param[60];/* Parameter Table*/ main() {... param[15] = 0x0; /* A/D start channel */ param[16] = 0xA; /* A/D stop channel */ pcl813(5,param); /* S/W triggered A/D conversion */.. param[15] = 0x2; /* A/D start channel */ pcl813(5,param); /* S/W triggered A/D conversion */.. } 24 PCL-813 User's Manual

27 2. Create a new Parameter Table. The software driver s job-oriented algorithm gives your program the capability of addressing several Parameter Tables using the same function call or group of function calls in one program. It should be noted, however, that the driver can only address one Parameter Table at a time. The driver executes the jobs according to the specified Parameter Table. For convenient programming, we can define an individual Parameter Table in advance for each of frequently called functions without troublesome table modifications. Example (C language): extern pcl813(int, unsigned int *); unsigned param1[60];/* Parameter Table 1 */ unsigned param2[60];/* Parameter Table 2 */ main() {... /* JOB 1 */ param1[15] = 0x0; /* A/D start channel */ param1[16] = 0xA; /* A/D stop channel */ param1[17] = 0x0; /* gain code */ pcl813(5,param1); /* S/W triggered A/D conversion */... /* JOB 2 */ param2[15] = 0x2; /* A/D start channel */ param2[16] = 0x8; /* A/D stop channel */ param2[17] = 0x5; /* gain code */ pcl813(5,param2); /* S/W triggered A/D conversion */... } Chapter 5 Software 25

28 Two Parameter Tables are defined in this example, Jobs 1 and 2 are the same, except for the start channel, stop channel and gain setting. NOTE: 1). When using BASIC language, negative numbers must be used to represent integer data over ). Negative number = integer ). For example, you need to pass as a input parameter to BASIC function: = So you have to use rather than as a parameter for the BASIC function. Parameter List Name Size Index Board number 1 word Param[0] Base I/O address 1 word Param[1] eserved 1 word Param[2] eserved 1 word Param[3] eserved 1 word Param[4] eserved 2 words Param[5] eserved 1 word Param[7] eserved 1 word Param[8] eserved 1 word Param[9] A/D Data Buffer A s address 2 words Param[10] A/D Data Buffer B s address 2 words Param[12] A/D conversion number 1 word Param[14] A/D start channel 1 word Param[15] A/D stop channel 1 word Param[16] Overall gain code 1 word Param[17] Gain code array pointer 2 words Param[18] Error number 1 word Param[45] eturn value 0 1 word Param[46] eturn value 1 1 word Param[47] 26 PCL-813 User's Manual

29 Parameter Descriptions param[0] 0 = Specify Number one Card. 1 = Specify Number two Card. The software driver supports up to two PC-LabCards at one time. Set Param[0] to tell the driver which card is specified. param[1] PC-LabCard I/O address can be anywhere from 200 (Hex) to 3F0 (Hex). The base address can be set to 200 or 210, 230 or F0. param[10] Offset address for A/D data buffer A. param[11] Segment address for A/D data buffer A. param[12] Offset address for A/D data buffer B. param[13] Segment address for A/D data buffer B. NOTE: For C or PASCAL, use their built-in memory allocation functions to allocate sufficient memory for buffers A and B. These memory allocation functions will return the offset and segment addresses. Save them to Param[10] through Param[13]. If buffer B is not used, be sure that you set Param[12] and Param[13] to 0. Because BASICA and Quick BASIC do not provide memory allocation functions, you will have to assign explicit segment addresses for each buffer. If you assign a segment address as 0, then the driver will use the current data segment (DS) for buffers A and B. If buffer B is not used, be sure that you set Param[12] and Param[13] to 0. param[14] param[15] This parameter sets the A/D conversion number. The range is from 1 to Sets the A/D start channel number. Chapter 5 Software 27

30 param[16] param[17] Sets the A/D stop channel number. The driver allows you to set all the A/D channels to the same amplification gain. Param[17] sets the A/D gain code for all channels. emember that individual amplifi cation gains can be set for each channel, defined in the gain array table. This parameter is used only for setting all A/D channels to the same amplification gain. Set Param[17] to FF (Hex) to cause the driver to refer to the gain array table. param[18] Offset address for the gain array table. param[45] Error number. param[46] eturn value 0. param[47] eturn value 1. Function List Special Function Calls Function 0: Get Error Message. Function 1: eserve. Function 2: Get Driver Version Number. Function 3: Driver Initialization. A/D Function Calls Function 4: A/D Initialization Function 5: Perform A/D conversion with software data transfer. 28 PCL-813 User's Manual

31 Function Description Special Function Calls Function 0 : Get Error Message. This function returns a zero-terminated text string pointer corresponding to an error code. The zero-terminated text string is a text string with numeric zero added at the end. Parameters used: param[45]: Error code. param[46]: Offset of address of the string pointer. param[47]: Segment of address of the string pointer. eturn data: param[46]: Offset of address of the string pointer. param[47]: Segment of address of the string pointer. Function 2 : Get Driver Version Number. This function returns the current version of the driver as well as the version of this Driver Specification. Parameters used: param[45]: Error code. param[46]: Driver specification version number. param[47]: Driver version number. eturn data: param[45]: Error code. param[46]: Driver specification version number. param[47]: Driver version number. Chapter 5 Software 29

32 Function 3: Driver Initialization. The PC-LabCard is initialized according to the parameter s definitions. It will stop all functions and release all resources. It should be called before any other function. Parameters used: param[0]: Board number. param[1]: Base I/O address. eturn data. param[45]: Error code. A/D Function Calls Function 4 : A/D Initialization This function is used to initialize the PC-LabCard s A/D function according to the above parameter s setting. eturn data: param[45]: Error code. Function 5 : Perform A/D conversion with software data transfer. This function will perform A/D conversion N times using software trigger with software data transfer. It will not return until the Nth. conversion has been completed. The value of N is specified at param[14]. eturn data: param[45]: Error code. 30 PCL-813 User's Manual

33 Language Interface BASICA The following program example provides you with the appropriate procedures to load the language interface for BASICA and GWBASIC version Example: 100 CLEA 49152! 110 DEF SEG = SEG = 256 * PEEK(&H511) + PEEK(&H510) 130 SG = SG ! / DEF SEG = SG 150 BLOAD 813BAS.BIN, 0 GWBASIC (version 3.20) The following program example provides you with the appropriate procedures to load the language interface for GWBASIC Version 3.20 and later. Example: 110 LOAD 813BAS.BIN DIVE TO AN OUTSIDE AEA 120 DEF SEG= &H5000 DEFINE OUTSIDE AEA 130 BLOAD 813BAS.BIN 140 END OF DIVE LOADING Chapter 5 Software 31

34 QuickBASIC 4.0 and 4.5 The following program example provides you with the appropriate procedures to load the language interface for QuickBASIC 4.0 or 4.5. Example 1: QB filename /L 813QB.QLB Example 2: QB /L 813QB.QLB Microsoft C The following examples show you how to compile and link the interface for different modes using Microsoft C. Small Mode: Compile : cl /AS/c file.c Link : link file+813cs.lib; Compact Mode: Compile : cl /AC/c file.c Link : link file+813cc.lib; Medium Mode: Compile : cl /AM /c file.c Link : link file+813cm.lib; Large Mode: Compile : cl /AL/c file.c Link : link file+813cl.lib; 32 PCL-813 User's Manual

35 Turbo C The following examples show you how to compile and link the interface for different modes using Turbo C. DOS Command Line Small Mode : TCC -ms file.c 813cs.lib Compact Mode : TCC -mc file.c 813cc.lib Medium Mode : TCC -mm file.c 813cm.lib Large Mode : TCC -ml file.c 813cl.lib Integrated Development Environment You will need to use a general text editor to create a project file with the extension name PJ, for example 813.PJ, which contains the corresponding mode interface and your program list. Small Mode : The project file should contain 813cs.lib Compact Mode : The project file should contain 813cc.lib Medium Mode : The project file should contain 813cm.lib Large Mode : The project file should contain 813cl.lib Borland C++ The following examples show you how to compile and link the interface for different modes using Borland C++. DOS Command Line Small Mode : BCC -ms -c file.c 813cs.lib Compact Mode : BCC -mc -c file.c 813cc.lib Medium Mode : BCC -mm -c file.c 813cm.lib Large Mode : BCC -ml -c file.c 813cl.lib Integrated Development Environment In Borland C++ s integrated environment, just pick the Project menu to create a project file and add the corresponding mode interface toit. Chapter 5 Software 33

36 Microsoft PASCAL The following examples show you how to compile and link the language interface using Microsoft PASCAL. Example: Compile Link : pas1 demoxx pas2 : link demoxx,,,813msp+pascal; Turbo PASCAL The following examples show you how to compile and link the language interface using Turbo PASCAL by adding certain statements to your program. Example 1: rogram main; uses Crt; {$F+} {$L 813tpf} { use as far call } Example 2: rogram main; uses Crt; {$F-} {$L 813tpn} { use as near call } 34 PCL-813 User's Manual

37 APPENDIX A Calibration APPENDIX A Calibration 35

38 CALIBATION In data acquisition and control applications, it is important to ensure that all measurement devices are calibrated regularly in order to maintain accuracy. A calibration program, CALB.EXE, is provided on the PCL-813 software disk to assist your calibration work. The minimum equipment required to perform a satisfactory calibration is a 4½ digit digital multimeter. In addition, a voltage calibrator or stable DC voltage source is required. A card-extender, such as the PC- LabCard Model PCL-757, is an inexpensive device that you will find greatly improves access to the board during calibration and will probably be useful for other applications. Calibration is easily performed using the CALB.EXE program. This program will lead you through the calibration and set-up procedure with a variety of prompts and graphic displays directing you to the appropriate adjustments. Material in this section is brief and is intended for use in conjunction with the calibration program. V Assignments The PCL-813 has four on-board Vs, which will allow you to make accurate calibration adjustments for each of the card s A/D functions. The location of each V is indicated in Figure A-1. The function of each V is listed below: V1 V 2 V3 V 4 A/D Bipolar offset adjustment A/D Bipolar full-scale adjustment Programmable amplifier offset adjustment A/D Unipolar full-scale adjustment 36 PCL-813 User's Manual

39 PCL CH S.E ISOLATED A/D CAD (A ) SW1 JP 100 V4 V1 V2 V TP 1 U 21 U 19 V Location APPENDIX A Calibration 37

40 A/D Calibration Because the PCL-813 supports a variety of A/D input ranges, accurate calibration for a certain A/D range may result in a small offset when the input range is altered. It is strongly suggested that you recalibrate whenever a different A/D range is selected. Calibration Steps: a. Bipolar Adjustment: (JP100 located at B ) (1) Short the A/D input of Channel 0 to. Adjust V1 until the reading of the A/D conversion flickers between 2047 and (2) Apply a voltage with a full-scale value corresponding to the specific A/D input range to A/D Channel 0. Adjust V2 until the reading of the A/D conversion flickers between 4094 and b. Unipolar Adjustment: (JP100 located at U ) (1) Short the A/D input of channel 0 to. Adjust VI until the reading of the A/D conversion flickers between 0000 and (2) Apply a voltage with a full-scale value corresponding to the specific A/D input range to A/D channel 0. Adjust V4 until the reading of the A/D conversion flickers between 4094 and PCL-813 User's Manual

41 APPENDIX B INDUSTIAL TEMINATION BOAD APPENDIX B Industrial Termination Board 39

42 Introduction The PCLD-881 is an universal screw terminal board designed for feild signal wiring in industrial applications. It can be connected to the analog and digital ports of various PC-LABCards via shielded cable and DB-37 connector. Due to the PCLD-881's special PCB layout you can install passive components to construct your own signal-conditioning circuits. You can easily construct a low-pass filter, attenuator or current-to-voltage converter by adding resistors and capacitors onto the board s circuit pads. Features Low-cost universal screw-terminal board for PC-LabCards with 20- pin connectors 40 terminal points for one DB-37 port eserved space for signal-conditioning circuits such as low-pass filter, current shunt and voltage attenuator Industrial type termination blocks permit heavy-duty and reliable connections of signals Table-top mounting using nylon standoffs. Screws and washers provided for panel or wall mounting Dimensions: 8.7" (L) x 4.53" (W) (221 mm x 115 mm) 40 PCL-813 User's Manual

43 Applications Field wiring for analog and digital I/O channels of PC-LabCards which employ standard or DB-37 connectors Signal-conditioning circuits can be implemented as illustrated in the following examples: a AIO Internal connector b C 0 Terminal block A GND a) Straight-through connection (factory setting): a = 0 W jumper b = none (open) C0 = none(open) b) 1.6 KHz (3 db) low pass filter: a = 10 KW b = none Co = 0.01 mf f 3 db = 1 2paC0 c) 10:1 voltage attenuator: a = 9 KW b = 1 KW C0 = none (Assume source impedance «10 KW ) Attenuation = b a + b d) 4-20 ma to 1-5 V DC signal converter: a = 0 W jumper b = 250 W (0.1% precision resistor) C0 = none APPENDIX B Industrial Termination Board 41

44 PCL-813 User's Manual PCLD-881 Circuit Diagram PCLD-881 Circuit Diagram PCLD-881 Circuit Diagram PCLD-881 Circuit Diagram PCLD-881 Circuit Diagram Size Doc Title EI D1 D2 CD1 AI0 EI6 D13 D14 CD7 AI6 AI0 AI1 AI2 AI3 AI4 AI5 AI CN1 CONNECTO DB37 AI7 D15 D16 CD8 AI1 EI7 D3 D4 CD2 AG EI AG EI D5 D6 CD3 AI2 EI8 D17 D18 CD9 AI8 AI7 AI8 AI9 AI10 AI11 AI12 AI13 AI14 AI15 AI16 AI17 AI18 AI19 AI9 D19 AI3 EI9 D7 AG EI AG EI D8 D9 CD4 AI4 EI10 D20 D21 CD10 AI10 AI20 AI21 AI22 AI23 AI24 AI25 AI26 AI27 AI28 AI29 AI30 AI31 D22 D23 CD11 D10 D11 CD5 AG AG EI D12 CD6 AI5 EI11 D24 CD12 AI11 AI[12..31] EI[12..31] AI[12..31] EI[12..31]

45 AI30 AI31 AI[12..31] EI[12..31] CD31 CD32 D61 D62 D63 D64 AI[12..31] EI[12..31] EI30 EI31 AI24 AI25 AI26 AI27 AI28 AI29 CD25 CD26 CD27 CD28 CD29 CD30 D49 D50 D51 D52 D53 D54 D55 D56 D57 D58 D59 D60 EI24 EI25 EI26 EI27 EI28 EI29 AI18 AI19 AI20 AI21 AI22 AI23 CD19 CD20 CD21 CD22 CD23 CD24 D3 D38 D3 D40 D4 D42 D4 D44 D4 D46 D4 D48 PCLD-881 Circuit Diagram APPENDIX B Industrial Termination Board 43

46 APPENDIX CALIBATION In data acquisition and control applications, it is important to ensure that all measurement devices are calibrated regularly in order to maintain accuracy. A calibration program, CALB.EXE, is provided on the PCL-813 software disk to assist your calibration work. The minimum equipment required to perform a satisfactory calibration is a 4½ digit digital multimeter. In addition, a voltage calibrator or stable DC voltage source is required. A card-extender, such as the PC-LabCard Model PCL-757, is an inexpensive device that you will find greatly improves access to the board during calibration and will probably be useful for other applications. Calibration is easily performed using the CALB.EXE program. This program will lead you through the calibration and set-up procedure with a variety of prompts and graphic displays directing you to the appropriate adjustments. Material in this section is brief and is intended for use in conjunction with the calibra-

47 tion program. V Assignments The PCL-813 has four on-board Vs, which will allow you to make accurate calibration adjustments for each of the card s A/D functions. The location of each V is indicated in Figure A-1. The function of each V is listed below: A/D Bipolar offset adjustment A/D Bipolar full-scale adjustment Programmable amplifier offset A/D Unipolar full-scale adjust- V1 V2 V3 adjustment V4 ment

48 Figure A-1 V Location A/D Calibration Because the PCL-813 supports a variety of A/D input ranges, accurate calibration for a certain A/D range may result in a small offset when the input range is altered. It is strongly suggested that you recalibrate whenever a different A/D range is selected. Calibration Steps: a. Bipolar Adjustment: (JP100 located at B ) (1) Short the A/D input of Channel 0 to. Adjust V1 until the reading of the A/D conversion flickers between 2047 and (2) Apply a voltage with a full-scale value corresponding to the specific A/D input range to A/D Channel 0. Adjust V2 until the reading of the A/D conversion flickers between 4094 and b. Unipolar Adjustment: (JP100 located at U )

49 (1) Short the A/D input of channel 0 to. Adjust VI until the reading of the A/D conversion flickers between 0000 and (2) Apply a voltage with a full-scale value corresponding to the specific A/D input range to A/D channel 0. Adjust V4 until the reading of the A/D conversion flickers between 4094 and PCLD-881 Industrial Terminal Board